Senior Reltio MDM Engineer — Remote/Hybrid

Billennium; Warszawa; Hybrid; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Udemy for Business

Private medical care

Multisport card

Language lessons

Shopping vouchers

Remote/hybrid work options

Career growth

Job summary

Billennium is seeking a Senior Reltio MDM Developer to join a strategic Enterprise Master Data Management program for a global client. You will contribute to design, governance, and enhancement of Reltio-based MDM solutions across multiple business domains.

You will design data models, match & merge logic, survivorship rules, and build integrations using Reltio APIs and RIH, while collaborating with architects, data engineers, and stakeholders in an Agile environment.

Qualifications

• 5+ years in Master Data Management, including 4+ years with Reltio MDM.
• Expertise in Reltio configuration: data models, match & merge, survivorship, crosswalks, hierarchies, reference data management.
• Experience with REST APIs, RIH, JSON, REST services, and enterprise data integrations.
• Understanding data governance, data quality, and master data lifecycle.
• Experience supporting production environments, strong troubleshooting and Agile delivery.

Responsibilities

• Design, configure, and enhance Reltio MDM solutions, including data models, entities, relationships, hierarchies, crosswalks, and golden records.
• Develop and maintain match & merge logic, survivorship rules, data quality controls, and stewardship processes.
• Build and support integrations using Reltio APIs and RIH, ensuring seamless data exchange across enterprise platforms.
• Provide production support, troubleshoot complex issues, perform root cause analysis, and drive platform stability and continuous improvement.
• Collaborate closely with architects, data engineers, business stakeholders, and governance teams in a global Agile environment.

Skills

Master Data Management

Reltio MDM

Data governance

Data quality

Agile delivery

Stakeholder management

Tools

Reltio REST APIs

Reltio Integration Hub (RIH)

Job description

Billennium is seeking a Senior Reltio MDM Developer to join a strategic Enterprise Master Data Management program for a global client. You will contribute to design, governance, and enhancement of Reltio-based MDM solutions across multiple business domains.

You will design data models, match & merge logic, survivorship rules, and build integrations using Reltio APIs and RIH, while collaborating with architects, data engineers, and stakeholders in an Agile environment.